Decreased α-synuclein in cerebrospinal fluid of aged individuals and subjects with Parkinson's disease

Takahiko Tokuda, Sultan A. Salem, David Allsop, Toshiki Mizuno, Masanori Nakagawa, Mohamed M. Qureshi, Joseph J. Locascio, Michael G. Schlossmacher, Omar M.A. El-Agnaf

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381 Citations (Scopus)


There is ample biochemical, pathological, and genetic evidence that the metabolism of α-synuclein (α-syn) plays a crucial role in the pathogenesis of Parkinson disease (PD). To examine whether quantification of α-syn in cerebrospinal fluid (CSF) is potentially informative in the diagnosis of PD, we developed a specific ELISA system and measured the concentration of α-syn in CSF from 33 patients with PD (diagnosed according to UK PD Society Brain Bank criteria) and 38 control subjects including 9 neurologically healthy individuals. We found that PD patients had significantly lower α-syn levels in their CSF than the control groups (p < 0.0001) even after adjusting for gender and age. Age was independently associated with lower α-syn levels. Logistic regression analysis showed that reduction in CSF α-syn served as a significant predictor of PD beyond age and gender alone (area under ROC curve, c = 0.882). Furthermore, we observed a close inverse correlation between α-syn levels in CSF and assigned Hoehn and Yahr score in this cohort of 71 living subjects (p < 0.0001), even after adjusting for age. These findings identify in the quantification of α-syn from CSF a potential laboratory marker to aid the clinical diagnosis of PD.

Original languageEnglish
Pages (from-to)162-166
Number of pages5
JournalBiochemical and Biophysical Research Communications
Issue number1
Publication statusPublished - Oct 13 2006
Externally publishedYes


  • Biomarker
  • Cerebrospinal fluid
  • Diagnosis
  • Neurodegenerative diseases
  • Parkinson disease
  • α-Synuclein

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology


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